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-rw-r--r--configs/samples/pjsip.conf.sample3
1 files changed, 3 insertions, 0 deletions
diff --git a/configs/samples/pjsip.conf.sample b/configs/samples/pjsip.conf.sample
index 24ff327f8..c5a3d7f49 100644
--- a/configs/samples/pjsip.conf.sample
+++ b/configs/samples/pjsip.conf.sample
@@ -734,6 +734,9 @@
; byte tags (default: "no")
;set_var= ; Variable set on a channel involving the endpoint. For multiple
; channel variables specify multiple 'set_var'(s)
+;rtp_keepalive= ; Interval, in seconds, between comfort noise RTP packets if
+ ; RTP is not flowing. This setting is useful for ensuring that
+ ; holes in NATs and firewalls are kept open throughout a call.
;==========================AUTH SECTION OPTIONS=========================
;[auth]